Nuclear Fuel aNalysis soFtware
SIMULATE5
Next-Generation Nodal Code for Light Water Reactors
SIMULATE5 is a 3D, steady-state, multi-group nodal code for the
analysis of both PWRs and BWRs. SIMULATE5 delivers vendor
independence and unparalleled accuracy for advanced core designs
with increased heterogeneity and aggressive operating
strategies.
Truly AdvancedHighly heterogeneous cores and aggressive
operating strategies have pushed existing reactor analysis methods
to their limit.
Studsvik, the global leader in reactor analysis software, has
developed SIMULATE5 to address these deficiencies and meet the
demands of current and future core designs with technical
advancements not found in any other analysis package.
The newly designed SIMULATE5 neutronics engine includes a
generalized multi-group diffusion model with a first-order
transport correction.
A built-in microscopic depletion model with more than 50
explicit nuclides improves the treatment of history effects,
shutdown cooling, and as-built loading discrepancies.
Radial and axial heterogeneities are treated using a proprietary
submeshing scheme to overcome the shortfalls of spatially-averaged
cross-sections and discontinuity factors.
SIMULATE5 includes more complete thermal-hydraulic modeling
outside of the core by extending the T-H model from the lower to
upper tie plates in PWRs and including the entire vessel loop in
BWRs.
Many advanced BWR thermal-hydraulic models have been synthesized
into a generic solver, ensuring accuracy even in complex scenarios,
such as PWR voiding.
Momentum equation solvers allow cross flow modeling – between
assemblies in PWRs and within assemblies in BWRs.
Proven ResultsStudsvik’s 25 years of experience producing
flexible, highly accurate software solutions for the nuclear power
industry is reflected in the state-of-the-art reactor physics
methods and engineering features in SIMULATE5.
Fully capable of modeling all types of PWRs and BWRs with
first-principle neutronic and thermal hydraulic calculations,
SIMULATE5 provides a robust, single solution to core design and
core analysis requirements.
Driven by CASMO5SIMULATE5’s advanced neutronics engine demands
more accurate physics models for assemblies containing high
mixed-oxide (MOX) or burnable poison concentrations.
CASMO5 has been developed specifically to support the increased
requirements of SIMULATE5. Together, they comprise the most
advanced light water reactor physics analysis system in the
world.
Studsvik Scandpower, Inc.309 Waverley Oaks Rd., Suite
406Waltham, MA USA 02452-8443 United StatesPhone: +1 (617)
965-7450E-mail: [email protected]
Fuel ManagementSIMULATE5 efficiently and accurately verifies
core loading pattern designs even with complicated core designs
containing:
• Reprocessed uranium and/or MOX• Integrated burnable poisons
(gadolinia,
erbia, IFBA), removable poisons (WABA, Pyrex), and combinations
of both
• In-core instrumentation for power monitoring, including 235U
fission chambers, rhodium and platinum detectors, gamma and neutron
TIPs, vandadium aeroballs, and gamma thermometers
The SIMULATE5 model supports fuel studies and validates
vendor-predicted cycle lengths, ensuring the maximum return on your
fuel investment.
Core Follow and Operational SupportOnce established, the
SIMULATE5 core model can perform a variety of core follow
calculations to support reactor operations.
SIMULATE5 automates a variety of core follow calculations,
including reactivity coefficients and rod worth analysis, that
would otherwise take hours of tedious user input.
Intelligent search routines allow the user to quickly search for
quantities such as critical boron or rod position, based on a
variety of bounding parameters.
Engineering ApplicationsSIMULATE5 is built to meet the needs of
reactor engineers and core designers, with functionality to support
startup physics testing, power maneuver guidance, thermal limit
assessment, shutdown margin, and much more.
Ease of UseThe SIMULATE5 input format is simple to use, allowing
free-format input capable of modelling complex core layouts and
includes automated functions to simplify tedious engineering
calculations.
With practical defaults for PWRs and BWRs, robust error
checking, and seamless interfaces to other Studsvik core analysis
tools, SIMULATE5 allows engineers to spend their time analyzing,
not troubleshooting software.
MethodologySIMULATE5 is a first-of-its-kind product with
cutting-edge neutronic and thermal-hydraulic methods and advanced
engineering features.
SIMULATE5 solves the multi-group diffusion equations with a
hybrid micro-macro depletion model that includes more than 50
explicitly defined actinide and fission product nuclides.
Increased spatial resolution reduces approximations and allows
explicit modeling of each axial material interface, while radial
submeshing improves assembly coupling.
An improved, multi-group pin power reconstruction model, which
combines homogeneous power shapes with pin form factors straight
from CASMO5, captures instantaneous spectral effects and
exposure-induced pin power variations.
Requirements For SIMULATE5SIMULATE5 is available for all
standard computing platforms running most modern 32- and 64-bit
operating systems. Linux, Windows, and UNIX architectures are all
acceptable environments for SIMULATE5.
0.25 0.50 0.75 1.00 1.25
Relative Power
Axi
al H
eig
ht
(in
.)
75
90
105
120
135
150
15
30
45
60
siMulate5 provides remarkably accurate results for any type of
Pwr or Bwr.
